BendixKing KLR 10 - Manual (Page 31)

KLR 10 Lift Reserve Indicator Pilot’s Guide
P/N D201306000109 Operation
Rev 1 Feb 2014 Page 3-13
3.4 PRACTICE APPROACHES USING AOA
A rule of thumb is to use an approach speed of 1.3 times the power
off stall speed in the landing configuration. Another rule of thumb is
in gusty winds add 5kts for one passenger and if it’s really gusty add
10kts for several passengers. While flying the approach at higher
speeds seems to be safer, having additional speed and kinetic
energy on a short runway may not be in the best interest of said
passengers. With the means to accurately know and control the AOA
you can fly a more stable approach and land with less kinetic energy
for any given situation than flying arbitrary approach speeds. Flying
an approach and landing using an AOA indicator may be a safer
procedure.
The AOA has been calibrated for an AOA just slightly less than
C
LMAX;
however an acceptable margin above that angle to fly
approach and landings has not been determined. As a starting point,
use the aircraft manual to determine the stall speed of the aircraft at
the actual gross weight in the landing configuration. Take that
calibrated airspeed and multiply it by 1.3, 1.2 and 1.1. Then refer to
the airspeed correction chart to determine the correction, if any, to
convert from calibrated airspeed to indicated airspeed for the three
speeds. For example:
Calibrated Stall Speed X 1.3 = App. CAS ± the correction = App. IAS
58 kts CAS X 1.3 = 75.4 kts CAS + 2 kts correction = 77 kts IAS
58 kts CAS X 1.2 = 69.6 kts CAS + 3 kts correction = 73 kts IAS
58 kts CAS X 1.1 = 63.8 kts CAS + 4 kts correction = 68 kts IAS
For ease of discussion, let’s call these speeds and the resulting AOA
indication as 3, 2 and 1 respectively. Once the AOA angles have
been identified, they will be accurate at any gross weight, every
time.